Practice Quiz - Reproductive System

  1. Embryonic tissues or structures involved with uterine development include:
    mesoderm
    urogenital sinus
    mesonephric ducts
    endoderm
  2. Structures derived from the mesonephric ducts include the:
    seminiferous tubules
    ureter
    prostatic urethra
    ductus deferens
  3. The scrotum of the male develops from:
    endoderm of urogenital sinus
    urethral groove
    urogenital folds
    genital or labioscrotal swellings
  4. The penile urethra is derived from the:
    urogenital sinus
    pelvic part of the vesicourethral canal
    phallic part of the vesicourethral canal
    cloaca
    mesonephric duct
  5. After the sinovaginal bulbs have proliferated and fused, they form a solid core of endodermal cells known as the:
    sinus tubercle
    prostatic utricle
    vaginal plate
    uterovaginal primordium
    vault of the vagina
  6. The layer of ectodermal cells which canalizes to form urethra at the distal end of the glans of the male phallus is known as the:
    glandular plate
    urethral plate
    urogenital fold
    primitive corpora spongiosum
    phallic part of the UG sinus
  7. The following structures are the derivatives of the primitive urogenital sinus EXCEPT:
    most of the urinary bladder
    male urethra
    female urethra
    upper part of vagina
    vestibule of the vagina
  8. The following structures are developmental homologues:
    scrotum - labia minora
    scrotal ligament - round ligament of uterus and ligament of ovary
    ductus deferens - uterine tube
    penile urethra - vagina
  9. The structures of the female pelvis representing the homologue of the gubernaculum testis are:
    cardinal ligament of the uterus
    round ligament of the uterus
    suspensory ligament of the ovary
    medial umbilical ligament
  10. Which of the following ligaments is derived from peritoneum?
    cardinal ligament of the uterus
    puboprostatic ligament
    ligament of the ovary
    suspensory ligament of the ovary
    round ligament of the uterus
  11. The structures listed below are of mesodermal origin EXCEPT:
    cortex of the kidney
    renal pyramids
    renal pelvis
    ureter
    urethra
  12. The embryonic origin(s) of the vagina is/are:
    urethral folds
    genital tubercle
    genital swellings
    sinovaginal bulbs
    cloaca
  13. The embryonic origin(s) of the labia minora is/are:
    urethral folds
    genital tubercle
    genital swellings
    sinovaginal bulbs
    cloacal membrane
  14. The embryonic origin(s) of the shaft of the penis is/are:
    urethral folds
    genital tubercle
    genital swellings
    sinovaginal bulbs
    cloacal membrane
  15. The embryonic origin(s) of the scrotum is/are:
    urethral folds
    genital tubercle
    genital swellings
    sinovaginal bulbs
    cloacal membrane
  16. The urogenital sinus is derived from:
    the mesonephric or Wolffian ducts
    the paramesonephric or Mullerian ducts
    both
    neither
  17. 020 The uterine tubes are derived from:
    the mesonephric or Wolffian ducts
    the paramesonephric or Mullerian ducts
    both
    neither B. the paramesonephric or Mullerian ducts. The uterine tubes, uterus and upper vagina develop from the female genital ducts, the paramesonephric ducts. Mesonephric duct becomes the epididymis, ductus deferens, seminal vesical and ejaculatory duct in the male. Female remnants of mesonephric duct may include epoophoron, paroophoron and Gartner's duct cysts.
  18. The seminal vesicles are derived from:
    the mesonephric or Wolffian ducts
    the paramesonephric or Mullerian ducts
    both
    neither
  19. The appendix of the epididymis is derived from:
    the mesonephric or Wolffian ducts
    the paramesonephric or Mullerian ducts
    both
    neither
  20. Which of the following definitions is NOT true:
    hypospadias - defect in the wall of the male urethra
    cryptorchismus - failure of descent of the testis
    true hermaphrodite has male and female gonads
    hydrocele testis - collection of fluid within the testis tubules
  21. With regard to the development of the testis:
    The embryonic origin of the germ cells is from the germinal epithelium of the gonad.
    Ductuli efferentes of the testis are derived from mesonephric tubules.
    The testis descends through the inguinal canal due to contraction of the gubernaculum.
    The duct of the epididymis, if uncoiled, would measure less than a foot in length.
  22. The uterus arises from:
    endoderm
    mesoderm
    both
    neither
  23. The vagina arises from:
    endoderm
    mesoderm
    both
    neither
  24. The following statements are true with respect to the development of the urogenital system:
    The germ cells, ova and sperm cells, are derived from the intermediate mesoderm.
    The epididymis is derived from the mesonephric duct.
    The Wolffian duct always disappears without a trace in the female.
    The urinary bladder in the male is of endodermal origin only.
  25. The following structures are directly or indirectly derived from the mesonephric or Wolffian duct EXCEPT:
    part of the epididymis
    part of the kidney
    part of the urinary bladder
    seminal vesicles
    prostate
  26. The following structures are the derivatives of the primitive urogenital sinus EXCEPT:
    most of the urinary bladder
    male urethra
    female urethra
    lower vagina
    ejaculatory ducts
  27. Which of the following is NOT a correct association:
    congenital polycystic kidney - result of defective union of mesonephric and metanephric units
    urachal fistula - persistence of allantoic duct
    double ureter - early splitting of the ureteric bud
    hydrocele testis - accumulation of fluid within the testis
  28. The derivatives of the Wolffian duct include each of the following EXCEPT:
    longitudinal duct of Gartner
    round ligament of uterus
    ductus deferens
    duct of the epididymis
    ejaculatory duct
  29. Of the following, the one most closely associated with the prostate gland is:
    mesonephric tubules
    mesonephric duct
    paramesonephric duct
    genital swellings
    urogenital sinus
  30. Of the following, the one most closely associated with the uterine tube is:
    mesonephric tubules
    mesonephric duct
    paramesonephric duct
    genital swellings
    urogenital sinus
  31. Of the following, the one most closely associated with the efferent ducts of the testes is:
    mesonephric tubules
    mesonephric duct
    paramesonephric duct
    genital swellings
    urogenital sinus
  32. Of the following, the one most closely associated with the vestibule in the female is:
    mesonephric tubules
    mesonephric duct
    paramesonephric duct
    genital swellings
    urogenital sinus
  33. Of the following, the one most closely associated with the seminal vesicle is:
    mesonephric tubules
    mesonephric duct
    paramesonephric duct
    genital swellings
    urogenital sinus
  34. Of the following, the one most closely associated with the urethra in the female is:
    mesonephric tubules
    mesonephric duct
    paramesonephric duct
    genital swellings
    urogenital sinus
  35. A true hermaphrodite can be distinguished from a pseudohermaphrodite by:
    chromosome complement
    behavior
    appearance of external genitalia
    presence of both testicular and ovarian tissue
  36. Abnormal development of external genitalia in an XY male would NOT be due to:
    5-alpha reductase deficiency
    androgen receptor deficiency
    failure of androgen-receptor complex to elicit a response in the nucleus
    failure in the cellular conversion of testosterone to estradiol
  37. In the absence of an inducing substance from the gonad of an XY fetus:
    the indifferent external genitalia may develop into female or male structures
    a true hermaphrodite develops
    derivatives of the paramesonephric duct may persist
    the indifferent stage in the genital system persists in postnatal life
  38. In the development of the genital system:
    primordial germ cells induce the indifferent gonad to develop into ovary or testis
    primitive sex cords arise from coelomic epithelium of the genital ridge in embryos of both sexes
    cortical cords give rise to follicular cells
    medullary cords give rise to seminiferous tubules in the male
    all of the above are correct
  39. An individual has 44 + XY chromosomes with testes but his tissues are unresponsive to androgens. This individual may have:
    uterine tubes
    blind ending vagina
    prostate gland
    external appearance of a male
  40. In the human, the mesonephros:
    is important in development of the internal genital organs in the female
    is the definitive unit of the kidney
    contributes to the outlet ducts from the testis
    has a dual origin from splanchnic mesoderm
  41. In the genital system: A duplication abnormalities of the uterus may be due to lack of fusion of paramesonephric ducts
    the most common cause of female pseudohermaphroditism is excessive androgen production
    cryptorchism may be due to abnormal androgen production
    pure gonadal dysgenesis may be due to failure of primordial germ cells to seed the indifferent gonad
    all of the above are correct
  42. In the female:
    the clitoris forms from the genital swellings
    the ureter forms from the urogenital sinus
    the urogenital groove remains open and forms the vestibule
    the labia minora are homologous to the scrotum
  43. In the development of the genital system, which is NOT correct:
    a true hermaphrodite has testicular and ovarian tissue, regardless of genetic or phenotypic sex
    genetic males convert testosterone to DHT, leading to the development of male external genitalia
    testosterone is converted to estradiol in the brain, resulting in imprinting as male
    the genetic sex always determines the development of the internal and external genitalia
  44. In the male, which is NOT correct:
    elongation of the genital tubercle forms the phallus
    fusion of the urethral folds establishes the penile urethra
    the genital swellings form the scrotum
    abnormal positioning of the genital tubercle causes hypospadias
  45. Concerning testicular feminization syndrome, which is NOT correct:
    individuals are males with a 44XY chromosome complement
    the paramesonephric system is suppressed, oviducts and uterus are absent
    external genital tissue is unresponsive to androgen and develops along female lines
    there is a lack of androgen production by the testes
  46. At about what age do the testes begin to descend into the scrotum?
    4 months
    5 months
    6 months
    7 months
    8 months
  47. Which of the following are functional derivatives of the mesonephros?
    efferent ductules of the male
    uterine tube of the female
    both
    neither
  48. The paramesonephric ducts in female embryos give rise to the:
    uterine tubes and uterus
    epoophoron
    inferior fifth of the vagina
    round ligament of the uterus
    ovarian ligament
  49. Which of the following gives rise to the labia majora?
    genital folds
    genital swellings
    genital tubercle
    urorectal fold
    inguinal fold
  50. Which of the following is a remnant of the gubernaculum?
    prostatic utricle
    ductus deferens
    median umbilical ligament
    vagina
    labium majora
    seminal vesicle
    proper ovarian ligament
    urinary bladder
    clitoris
    ureter
    uterine tube
    testis
    kidney
    labium minora
  51. Which of the following develops from the genital tubercle?
    prostatic utricle
    ductus deferens
    median umbilical ligament
    vagina
    labium majora
    seminal vesicle
    proper ovarian ligament
    urinary bladder
    clitoris
    ureter
    uterine tube
    testis
    kidney
    labium minora